Grain-scourer



(No Model.)

' D. BTNIER, Jr.

GRAIN SGOURBR. N0. 360,670. Patented Apr. 5, 1887.

INVBNTOR BY @mi ATTORNEYS.

. u Mm NITED STATES PATENT OFFICE.

DAVID ETNIER, JD., OF MOUNT UNIN, PENNSYLVANIA.

GRAIN-Sconces..

SPECIFICATION forming part of Letters Patent No. 360,670, dated April 5,1887.

Applicalion led June $29, 1886.

To all whom it may concern,.-

Be it known that I, DAVID ETNIER, Jr., of Mount Union, in the county ofHuntingdon and State of Pennsylvania, haveinvented a new and usefulImprovement in Grain-scourers, of which the following is aspecification.

The construction and combination of devices constituting my inventionare as hereinafter described and claimed.

In the accompanying drawings, Figure I is a central longitudinal sectionof my machine. Fig. 2 is a cross-section on the line xx, Fig. l. Fig. 3is a crosssection on line y y, Fig. l. Fig. Llisa cross-section on linez c, Fig. 1.

The cylinder of the scourer is formed in two sections, Aand A,which aresecured together by bolts passing through radial circular flanges, asshown. The interior surface of the section A has parallel longitudinalribs a, Fig. 2; but the other section, A', has a smooth interior, Fig.3. The conveyer'arranged within said cylinder consists of a shaft, B,provided with spiral flanges C and C,which are of differentconstruction-that is to say, the shaft B,which traverses the cylindercentrally from end to end, has a continuous spiral iiange, C, within theribbed cylinder-section A, while the other part of the shaft, surroundedby section A, has a series of disconnected or independent spirally-bentarms, G.

The pitch of the spiral flange C gradually decreases as it approachesthe cylindersection A', so that the grain is fed through the section Awith gradually-lessened rapidity. The result is that the density orcompactness ofthe mass and the pressure of the kernels upon eachotherare gradually augmented and the grain thereby scoured and cleanedmore and more effectively as it moves along. In this operation the ribsa obviously contribute ma'- terially to the desired result by adding tothe area of frictional surface.

W'hen the grain passes from cylinder-section A into section Aitsprogress is no longer hindered by friction with ribs, nor is there avariation of pressure and rapidity of feed; but the radial arms C haveall a like twist and are placed equidistantly on the shaft B, so as toact equally on the grain. The said arms serve to continue the progressof the latter toward the discharge end of the cylinder, and

Serial No. 206.655. (No model.)

also incidentally rub and scour it; but the chief means I employ forrubbing and scouring the grain consists of devieesI willnow describe.

A radial iiange, b, is formed on the outer end of cylinder-section A',and an annular piece, D, of leather or other material suitable to form afriction-surface, is applied to it, as shown in Fig. l. A rubber strip,c, may be placedpbeneath it, to give it more elasticity. The end of thecylinder-section A is opposed by a head, E,Whieh serves as a yieldingrubber for scouring the grain. The said head E consists of a diskmounted on the reduced polygonal part d of the conveyer-shaft, and provided with an annular friction-piece, D',formed of leather or equivalentmaterial. The head Eis adapted to slide lengthwise on the shaft B; butthe latter, being square or polygonal, the head partakes of itsrotation.

In rear of the head, and encircling the shaft B, I place a spiralspring, F, which supports the head with an elastic pressure. The tensionof the spring, and thereby its pressure on the 'the head, may beregulated at will by means of a collar, c, which slides on the shaft B,and is secured by a clamp-screw, as shown in Figui.

It will now be understood that the spring F allows the head to yieldsufiiciently to permit the grain to pass laterally between it and thefixed rubber, whereby it is scoured to the required degree. Such lateraldischarge of the grain from the cylinder is of course effected by therotation ofthe head combined with the pressure exerted by the spiralconveyer.

Additional to the scourer proper I propose to employ a polisher, whichis constructed as follows: An annular hood, G, is permanently attachedto the cylinder-flange, and incloses or surrounds both rubbers, and alsoprojects a short distance over the back of the head E. To the outer sideof the latter I attach an annular brush, H, which acts on .a roughenedportion of the hood G, as shown in Fig. l.

The grain discharged from between the rubbers passes between this brushand the opposed roughened surface of the hood G, and is thereby polishedby .being freed from fuzzy or light particles that may by chance stilladhere to it after leaving the scourer proper, and is thus prepared forgrinding.

ICO

2. In a grain-scourer, the oombinationmith the conveyer, the cylinder,and the fixed and rotating rubbers, of an nnnular hood or casesurrounding said rubbers, and a brush fastened on the movable rubber,Substantially as shown and described.

3. In a grainseourer, the combination, with the eylinderseetion A,having interior longitudinal ribs, of the oylindenseotion A, having asmooth or ribless interior surface, a conveyer arranged as specified,and the fixed and rotating rubbers, as shown and described.

DAVID ETNIER, JR..

Vitnesses:

FRANK H. HARRIsoN, HENRY MCGIRVEY.

